Saw-set



(No Model.) 7 Q J. A. MORRELL.

' SAW SET.

No. 564,634. Patented July 28, 1896.

/ 8r v m m: mums runs 00.. Pno'ro-uma. WISHING-VON u UNITED STATES PATENT ()EFI E.

JAMES A. MoEEELL, or L NsnALE, PENNSYLVANIA.

sAw-sE-r.

SPECIFICATION forming part of Letters Patent No. 564,634, dated July 28,1896.

Application filed January 29,1896. Serial No. 577,293. (No model.)

To all whom it may concern:

Be it known that I, JAMES A. MoREELL, a resident of Lansdale, in thecounty of Montgomery and State of Pennsylvania, have invented certainnew and useful Improvements in Saw-Sets; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable oth-.

ers skilled in the art to which it pertains to make and use the same.

The invention relates to saw-sets, and has for its object to increasetheir efficiency and capacity; and the invention consists in theconstruction hereinafter described and particularly pointed out.

In the accompanying drawings, Figure 1 is a central longitudinalsection. I Fig. 2 is a similar view showing a modified detail. Fig. 3 isan enlarged front elevation showing the parts in position to receive thesaw-teeth. Fig. 4 is a similar view, the separable handle being removedand a pivoted dog turned downwardly, the parts being inoperative. Fig. 5is a side elevation of a handle. Fig. 6 is a partial side elevation, andFig. 7 is a similar view of the opposite side.

Numeral 1 denotes a handle having fixed thereto a jaw 2, and providedwith ways or slots 3 to receive the arms 4 of the opposite jaw 5. Theproximate faces of the jaws are always held parallel by the devices tobe described and their free ends are adapted to clamp the body of thesaw in or at the close of the tooth-setting operation. The jaw 5 is mademovable transversely of the handle 1 by the arms 4 sliding in said slots3.

6 is a spring tending to hold the jaws apart.

7 is a separable handle having a bearing 8, adapted to be seated in adepressed fulcrum 9 in the handle 1, as indicated.

In the arms 4 is pivoted a swinging piece or dog 10, adapted to looselyengage the depression 7 in the handle 7.

When the handles are closed, the handle 7 is moved about its fulcrum onhandle 1. Said handle 7 by its overhanging end 7 pulls inwardly the freeend of dog 10, which turns on its pivot and between the arms 4. Thisoperation has the eifect to bodily move the handles and connected partstoward each other, the j aw-arms moving in slots 3 and the jaws closing.Said arms and slots guide the jaws in straight lines to and from eachother.

By this movement the spring 6 is compressed and thereby put in readinessto open the jaws by a reverse. movement of the parts. Each j aw isprovided in or adjacent the throat formed by the connection of the jawswith oppositely-inclined tooth-setting faces 11 and 12, thesimilarly-inclined faces of the two jaws being situated diagonallyopposite each other.

13 denotes a projection or stud for guiding the tool to the properlateral situation with respect to the saw-teeth. This projecting guidein operation comes in contact with two teeth, one on each side,"and'insures their proper lateral situation and also determines the depthor distance of the setting operation on each tooth. Its simplicity ofconstruction and the above-named twofold func tions are characteristicof the improvement.

The guide 13 may be permanently fixed to or integral with a jaw, or maybe made adjustable by means of a screw 13 or the like, as represented inFig. 2. This tooth-guide has its forward free corner cut away orbeveled, as indicated at 14, and by this feature of constructioncooperating with the adjustability of the guide it is adapted to varythe Width of the set. Thus, for example, when fully advanced the widestpart of the beveled guide will touch the base of the teeth and insure anarrow set, and when the guide is withdrawn to bring a narrower part inthe plane of the saw the latter can be pushed farther into the throat oftool to insure a wider set.

The tool having been applied to the teeth of a saw so that the guide orcentering device 13 enters between two of them, said teeth will besituated immediately between the similarly-inclined faces 11 and 12 ofthe opposite jaws, so that when said jaws are closed, as beforedescribed, the teeth will be oppositely bent and properly set, whereuponthe spring is permitted to separate the jaws, and they are applicable toother teeth in like manner, thus enabling the setting of two teeth atevery operation. The principle of the improvement is not, however,confined to the simultaneous setting of any particular number of teeth,though one of its main objects is to thus set several teethat once, andall the teeth of a saw could be set at once by adequate power and-asuitable number of bearing-faces 11 and 12.

- The detachable handle 7 ,when closed, pulls inwardly the point of thedog, as stated, and thereby increases the difierence between the longand short arm of the handle 7, considered as alever, and so increasesthe leverage just before and at the completion of the setting operation.

The shoulders at each side of the slots or ways 3 guide the jaws in aright line to and from each other.

Having thus described myinvention, what I claim is- 1. In a saw-set thetwo jaws having free ends adapted to embrace the body of a sawblade andconnected to be moved to and from each other in a straight line each jawhaving oppositely-inclined teeth-setting faces adjacent the throatformed by the connection of the jaws, one on each side adapted to bearon different teeth, the faces on the same side of the tool incliningsimilarly to each other and oppositely to those on the other side,substantially as described.

2. In a saw-set the two jaws having free ends adapted to embrace thebody of a sawblade and connected to be moved to and from each other in astraight line each jaw having oppositely-inclined teeth-setting facesadjacent the throat formed by the connection of the jaws, one on eachside adapted to bear on different teeth, the faces on the same side ofthe tool inclining similarly to each other and oppositely to those onthe other side, and a central tooth-guide or centering device betweenthe laterally'adjacent faces, substantially as described.

3. In a saw-set the two jaws having free ends adapted to embrace thebody of a sawblade and connected to be moved to and from each other in astraight line each jaw having oppositely-inclined teeth-setting facesadjacent the throat formed by the connection of the jaws, one on eachside adapted to bear on different teeth, the faces on the same side ofthe tool inclining similarly to each other and oppositely to those onthe other side, and a central tooth-guide or centering device betweenthe laterally-adjacent faces, said centering device being beveled andadjustable in the longitudinal plane of the tool, substantially asdescribed.

4. In a saw-set the jaws fixed respectively to a handle and to armstransverselymovable and provided with a lever-handle having a fulcrum onthe fixed j aw-handle between the arms whereby the jaws may be closed,and a movable part or dog adapted to swing toward the fulcrum toincrease the leverage, substantially as described.

5. In a saw-set, the combination of jaws, devices for closing them, anda tooth-guide adapted to enter between the saw-teeth to be set, saidjaws having tooth-setting faces on each side said guide, substantiallyas described.

6. In a saw-set, the combination of jaws, devices for closing them, anda tooth-guide adapted to enter between the saw-teeth to be set, saidjaws having tooth-setting faces on each side the guide, the jaw oppositethe guide being recessed to receive said guide, substantially asdescribed.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JAMES A. MORRELL.

Witnesses:

BENJ. R. CATLIN, FRANK D. BLACKISTONE.

